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10338 (1991 RB11)
Classification: Main-belt Asteroid          SPK-ID: 2010338
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1548314465678016 3.1374e-08  
a 3.114070051071793 1.3833e-08 au
q 2.631914080350879 9.9786e-08 au
i 1.550659751786367 3.485e-06 deg
node 158.1222652192338 0.00012746 deg
peri 244.1140281515068 0.00012795 deg
M 88.55898869897024 1.1021e-05 deg
tp 2458706.734046012687
(2019-Aug-11.23404601)
6.0976e-05 TDB
period 2007.201595759635
5.50
1.3374e-05
3.662e-08
d
yr
n .1793541818422859 1.1951e-09 deg/d
Q 3.596226021792706 1.5975e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2194  
   data-arc span      16487 days (45.14 yr)  
   first obs. used      1975-11-29  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48036  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 01:54:16  

Additional Information
 Earth MOID = 1.63998 au 
 Jupiter MOID = 1.80947 au 
 T_jup = 3.199 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.26   n/a E2021B10  
diameter diameter 12.838 km 0.219 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 10.55 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.062   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

10338 (1991 RB11)          Discovered 1991-Sep-10 by Holt, H. E. at Palomar
Reference: 19990402/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1991 RB11 = 1975 WR1 = 1980 TJ9 = 1986 WN6 = 1996 QB1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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